EP0284106A3 - Circuitry for inserting a service channel for an information transmission system - Google Patents

Circuitry for inserting a service channel for an information transmission system Download PDF

Info

Publication number
EP0284106A3
EP0284106A3 EP19880104883 EP88104883A EP0284106A3 EP 0284106 A3 EP0284106 A3 EP 0284106A3 EP 19880104883 EP19880104883 EP 19880104883 EP 88104883 A EP88104883 A EP 88104883A EP 0284106 A3 EP0284106 A3 EP 0284106A3
Authority
EP
European Patent Office
Prior art keywords
service channel
control word
channels
telecommunications
circuitry
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19880104883
Other languages
German (de)
French (fr)
Other versions
EP0284106B1 (en
EP0284106A2 (en
Inventor
Harbhajan Singh Virdee
Hamid R. Rezaie
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0284106A2 publication Critical patent/EP0284106A2/en
Publication of EP0284106A3 publication Critical patent/EP0284106A3/en
Application granted granted Critical
Publication of EP0284106B1 publication Critical patent/EP0284106B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/12—Arrangements providing for calling or supervisory signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H04J3/1605—Fixed allocated frame structures
    • H04J3/1623—Plesiochronous digital hierarchy [PDH]
    • H04J3/1647—Subrate or multislot multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Transceivers (AREA)

Abstract

In accordance with the present invention a plurality of input control data bits are added to a plurality of input telecommunications transmission channels in the form of an input control word wherein any of the individual data bits can be changed without adversely effecting the ability of the system to synchronize and recover the added control word from the multiplexed data stream at the receiving end. A service channel is thus provided. The synchronization circuit described by the present invention is particularly useful in telecommunications transmission of a large plurality of communication channels as is the case in fiber optic transmission wherein a single control word may be useful, for example, as an alarm with respect to one or more of the multiplex telecommunications channels. In a preferred embodiment of the invention, an 8 Kbit/sec control channel is described.
EP88104883A 1987-03-26 1988-03-25 Circuitry for inserting a service channel for an information transmission system Expired - Lifetime EP0284106B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US30754 1987-03-26
US07/030,754 US4792949A (en) 1987-03-26 1987-03-26 Service channel circuit for multiplexed telecommunications transmission systems

Publications (3)

Publication Number Publication Date
EP0284106A2 EP0284106A2 (en) 1988-09-28
EP0284106A3 true EP0284106A3 (en) 1991-02-06
EP0284106B1 EP0284106B1 (en) 1995-02-01

Family

ID=21855849

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88104883A Expired - Lifetime EP0284106B1 (en) 1987-03-26 1988-03-25 Circuitry for inserting a service channel for an information transmission system

Country Status (4)

Country Link
US (1) US4792949A (en)
EP (1) EP0284106B1 (en)
AT (1) ATE118137T1 (en)
DE (1) DE3852900D1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4891808A (en) * 1987-12-24 1990-01-02 Coherent Communication Systems Corp. Self-synchronizing multiplexer
US4866773A (en) * 1988-05-20 1989-09-12 Dan Lubarsky System for interfacing a digital encryption device to a time-division multiplexed communication system
US5414740A (en) * 1992-12-17 1995-05-09 International Business Machines Corporation Synchronous communication system having multiplexed information transfer and transition phases
AU5992094A (en) * 1993-05-10 1994-12-12 Taligent, Inc. Multimedia synchronization system
US5596696A (en) * 1993-05-10 1997-01-21 Object Technology Licensing Corp. Method and apparatus for synchronizing graphical presentations
US5680639A (en) * 1993-05-10 1997-10-21 Object Technology Licensing Corp. Multimedia control system
US5530859A (en) * 1993-05-10 1996-06-25 Taligent, Inc. System for synchronizing a midi presentation with presentations generated by other multimedia streams by means of clock objects
US5581390A (en) * 1995-08-01 1996-12-03 Motorola, Inc. Apparatus and method for conveying frame timing, data timing, and data
DE10346965A1 (en) * 2003-10-09 2005-06-02 Siemens Ag Voltage regulation for remote consumers

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3886317A (en) * 1973-12-17 1975-05-27 Vidar Corp Synchronous data channel for pulse code modulation communications system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4172968A (en) * 1961-12-08 1979-10-30 General Atronics Corporation Electrical system
US4445215A (en) * 1982-03-05 1984-04-24 Ampex Corporation Programmable frequency ratio synchronous parallel-to-serial data converter
DE3426366A1 (en) * 1984-07-18 1986-01-23 Basf Ag, 6700 Ludwigshafen METHOD FOR PRODUCING MAGNETIC RECORDING CARRIERS

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3886317A (en) * 1973-12-17 1975-05-27 Vidar Corp Synchronous data channel for pulse code modulation communications system

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
BELL LABORATORIES RECORD. vol. 53, no. 2, Februar 1985, MURRAY HILL, NEW JER Seiten 136 - 142; E.T. Mackey et al: "Mixing Data and Voice on the T1 Line" *
Conference Record, IEEE International Conference on Communications, 22-25 Juni 1986, vol.1 Seiten 371- 375, Toronto CN A.M. Ali: "Multiplexing and Line Coding Schemes for Broadband ISDN" *
DATA COMMUNICATIONS. vol. 15, no. 7, Juli 1986, NEW YORK US Seiten 141 - 143; E.H. Lee: "A BOC explains where the bits went" *
ELEKTRONIK. vol. 31, no. 22, November 1982, MUNCHEN DE Seiten 89 - 94; P. Marten: "Optische Sender mit Halbleiterlasern für hohe Bitraten" *
IEEE COMMUNICATIONS MAGAZINE. vol. 24, no. 8, August 1986, New York, US Seiten 17 - 25; B. Fleury: "Asynchronous High Speed Digital Multiplexing" *

Also Published As

Publication number Publication date
DE3852900D1 (en) 1995-03-16
EP0284106B1 (en) 1995-02-01
EP0284106A2 (en) 1988-09-28
ATE118137T1 (en) 1995-02-15
US4792949A (en) 1988-12-20

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